[PATCH 1/1] block: Use WRITE for part_stat_read references.

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Use the WRITE define when referencing part_stat_read rather than
hardcoding entry 1.  No functional change but it's cleaner.

Sign-off-by: Michael Callahan <michaelcallahan@xxxxxx>
---
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 304c712..5e90934 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3182,7 +3182,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	sbi->s_sb_block = sb_block;
 	if (sb->s_bdev->bd_part)
 		sbi->s_sectors_written_start =
-			part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+			part_stat_read(sb->s_bdev->bd_part, sectors[WRITE]);
 
 	/* Cleanup superblock name */
 	strreplace(sb->s_id, '/', '!');
@@ -4359,7 +4359,7 @@ static int ext4_commit_super(struct super_block *sb, int sync)
 	if (sb->s_bdev->bd_part)
 		es->s_kbytes_written =
 			cpu_to_le64(EXT4_SB(sb)->s_kbytes_written +
-			    ((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+			    ((part_stat_read(sb->s_bdev->bd_part, sectors[WRITE]) -
 			      EXT4_SB(sb)->s_sectors_written_start) >> 1));
 	else
 		es->s_kbytes_written =
diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c
index 1420a3c..7254239 100644
--- a/fs/ext4/sysfs.c
+++ b/fs/ext4/sysfs.c
@@ -55,7 +55,7 @@ static ssize_t session_write_kbytes_show(struct ext4_attr *a,
 	if (!sb->s_bdev->bd_part)
 		return snprintf(buf, PAGE_SIZE, "0\n");
 	return snprintf(buf, PAGE_SIZE, "%lu\n",
-			(part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+			(part_stat_read(sb->s_bdev->bd_part, sectors[WRITE]) -
 			 sbi->s_sectors_written_start) >> 1);
 }
 
@@ -68,7 +68,7 @@ static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
 		return snprintf(buf, PAGE_SIZE, "0\n");
 	return snprintf(buf, PAGE_SIZE, "%llu\n",
 			(unsigned long long)(sbi->s_kbytes_written +
-			((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
+			((part_stat_read(sb->s_bdev->bd_part, sectors[WRITE]) -
 			  EXT4_SB(sb)->s_sectors_written_start) >> 1)));
 }
 
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 7a4558d..c5fe6ff 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -808,7 +808,7 @@ struct f2fs_sb_info {
  * and the return value is in kbytes. s is of struct f2fs_sb_info.
  */
 #define BD_PART_WRITTEN(s)						 \
-(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) -		 \
+(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[WRITE]) -	 \
 		s->sectors_written_start) >> 1)
 
 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 006f87d..c7f1443 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1464,7 +1464,7 @@ try_onemore:
 	/* For write statistics */
 	if (sb->s_bdev->bd_part)
 		sbi->sectors_written_start =
-			(u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]);
+			(u64)part_stat_read(sb->s_bdev->bd_part, sectors[WRITE]);
 
 	/* Read accumulated write IO statistics if exists */
 	seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
--
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